RICHMOND, Va. — The Patriots have completed their 11th practice of training camp, which was their third and final joint session with the Redskins in Richmond, Va. It was held in shells for the third time during camp.

Observations:It was a walkthrough between the two teams, who barely did anything more than jogging on any play. It was an easy way to transition from two hard practices into tomorrow’s preseason opener.

Because of the speed of each play, there was no point to track any pass attempts. Everyone completed everything, essentially.

Redskins wide receiver DeSean Jackson injured his left ankle during the session. He got it wrapped in the trainers’ tent and went to the locker room. It’s unclear how this could impact his status for tomorrow’s game, which would take away from a potential matchup with cornerback Darrelle Revis. Even if it would only be for a handful of plays, remember Jackson beat Aqib Talib for a 47-yard touchdown during last year’s preseason opener, so a few snaps are still meaningful.

Siliga injured his left hand yesterday and left the field with a trainer. He returned with a hard cast over the hand and didn’t participate in the rest of practice. Siliga wasn’t present today in any capacity.

Williams was rolled up by James White yesterday. He watched practice and had a black sleeve on his right leg, so it doesn’t look to be a long-term thing.

The teams worked on special teams situations like onside kicks and squib kicks. But when they worked on field goals, they were just snapping the ball but not kicking it. Stephen Gostkowski was wearing sneakers at that point.

Early during positional drills, a large group of Patriots offensive and defensive players crossed paths in the end zone and clowned around with each other, even drawing a smirk from Bill Belichick. This was about as low-intensity of a practice as it could get.

Other than that, there wasn’t too much going on during the 85-minute workout.

Next up: The Patriots and Redskins play tomorrow night at 7:30. The Pats’ next practice date in Foxboro hasn’t been announced.